Finding the Third Proportional to 685,072.69 and 957,769.31

Step by Step Solution

1. Step 1: Write the proportion equation
   685,072.69 : 957,769.31 = 957,769.31 : x
2. Step 2: Convert to fraction form
   685,072.69/957,769.31 = 957,769.31/x
3. Step 3: Cross multiply
   685,072.69x = 957,769.31 × 957,769.31
4. Step 4: Simplify right side
   685,072.69x = 917,322,055,966.72
5. Step 5: Solve for x
   x = 917,322,055,966.72/685,072.69
6. Step 6: Final answer
   x = 1,339,014.20